物理机上添加磁盘操作

注意：

1)物理机上添加磁盘操作，不涉及到start_udev的动作。

2)磁盘分区的操作，需要谨慎进行，核准无误后再操作。

(1)查看磁盘名称命名

# su - grid

$ sqlplus / as sysasm

set linesize 180

col name format a20

col path format a30

col header_status format a15

col failgroup format a20

select name, path, header_status, mode_status, state, failgroup, disk_number from v$asm_disk order by name;

SQL>

NAME PATH HEADER_STATUS MODE_STATUS STATE FAILGROUP DISK_NUMBER

-------------------- ------------------------------ --------------- --------------------- ------------------------ -------------------- -----------

CRSDG_0000 /dev/mapper/asmcrs1p1 MEMBER ONLINE NORMAL CRSDG_0000 0

CRSDG_0001 /dev/mapper/asmcrs2p1 MEMBER ONLINE NORMAL CRSDG_0001 1

CRSDG_0002 /dev/mapper/asmcrs3p1 MEMBER ONLINE NORMAL CRSDG_0002 2

ODSDW_0000 /dev/mapper/asmdata1p1 MEMBER ONLINE NORMAL ODSDW_0000 0

ODSDW_0001 /dev/mapper/asmdata2p1 MEMBER ONLINE NORMAL ODSDW_0001 1

ODSDW_0002 /dev/mapper/asmdata3p1 MEMBER ONLINE NORMAL ODSDW_0002 2

ODSDW_0003 /dev/mapper/asmdata4p1 MEMBER ONLINE NORMAL ODSDW_0003 3

ODSDW_0004 /dev/mapper/asmdata5p1 MEMBER ONLINE NORMAL ODSDW_0004 4

/dev/mapper/asmdata2 CANDIDATE ONLINE NORMAL 10

/dev/mapper/asmdata3 CANDIDATE ONLINE NORMAL 11

/dev/mapper/asmcrs2 CANDIDATE ONLINE NORMAL 12

NAME PATH HEADER_STATUS MODE_STATUS STATE FAILGROUP DISK_NUMBER

-------------------- ------------------------------ --------------- --------------------- ------------------------ -------------------- -----------

/dev/mapper/asmdata4 CANDIDATE ONLINE NORMAL 13

/dev/mapper/asmcrs1 CANDIDATE ONLINE NORMAL 14

/dev/mapper/asmcrs3 CANDIDATE ONLINE NORMAL 15

/dev/mapper/asmdata5 CANDIDATE ONLINE NORMAL 1

/dev/mapper/asmdata1 CANDIDATE ONLINE NORMAL 9

16 rows selected.

SQL>

/dev/mapper/asmdata5

由上边的输出，确定新增的名字应该为asmdata6

(2)修改alias的新增磁盘的名字

[root@ ~]# vi /etc/multipath.conf

multipath {

wwid 360002ac000000000000002ea000066e3

alias asmdata5

}

multipath {

wwid 360002ac*************************

alias asmdata6 <<< 设置新增的磁盘的名字为asmdata6

}

(3)重新加载mulitipathd，并查看相关的磁盘信息

[root@ ~]# service multipathd reload

[root@ ~]# multipath -ll |grep -A6 asm

asmdata6 (360002ac*************************) dm-13 3PARdata,VV <<< 找到对应的asmdata6这块磁盘

... snip ...

asmdata5 (360002ac000000000000002ea000066e3) dm-13 3PARdata,VV

size=1.0T features='0' hwhandler='0' wp=rw

`-+- policy='round-robin 0' prio=1 status=active

|- 7:0:0:8 sdap 66:144 active ready running

|- 8:0:0:8 sdar 66:176 active ready running

|- 7:0:1:8 sdaq 66:160 active ready running

`- 8:0:1:8 sdas 66:192 active ready running

(4)核准参数文件12-dm-permissions.rules配置

[root@ ~]# cat /etc/udev/rules.d/12-dm-permissions.rules

ACTION!="add|change", GOTO="dm_end"

ENV{DM_UDEV_RULES_VSN}!="?*", GOTO="dm_end"

# PLAIN DM DEVICES

#

# Set permissions for a DM device named 'my_device' exactly

# ENV{DM_NAME}=="my_device", OWNER:="root", GROUP:="root", MODE:="660"

ENV{DM_NAME}=="asm*", OWNER:="grid", GROUP:="dba", MODE:="660"

LABEL="dm_end"

[root@ ~]#

(5)对新增磁盘进行分区操作(请再次核准要操作的磁盘，失误操作将导致数据库损坏)

# parted /dev/mapper/asmdataXXX mklabel gpt mkpart primary 0% 100%

本示例为asmdata6，请根据实际情况，执行具体的操作命令，如下所示为对asmdata6磁盘进行分区。

[root@ ~]# parted /dev/mapper/asmdata6 mklabel gpt mkpart primary 0% 100%

(6)确认新增磁盘属性

查询具体新增磁盘的属性(asmdata6和asmdata6p1)

这里以asmdata5, asmdata5p1作为示例输出，请以实际的新增磁盘的相关属性asmdata6和asmdata6p1

[root@ ~]# ls -l /dev/mapper/asm*

lrwxrwxrwx 1 root root 7 8月 6 11:15 /dev/mapper/asmcrs1 -> ../dm-4

lrwxrwxrwx 1 root root 8 8月 6 11:15 /dev/mapper/asmcrs1p1 -> ../dm-15

lrwxrwxrwx 1 root root 7 8月 6 11:15 /dev/mapper/asmcrs2 -> ../dm-6

lrwxrwxrwx 1 root root 8 8月 6 11:15 /dev/mapper/asmcrs2p1 -> ../dm-17

lrwxrwxrwx 1 root root 7 8月 6 11:15 /dev/mapper/asmcrs3 -> ../dm-3

lrwxrwxrwx 1 root root 8 8月 6 11:15 /dev/mapper/asmcrs3p1 -> ../dm-14

lrwxrwxrwx 1 root root 7 8月 6 11:15 /dev/mapper/asmdata1 -> ../dm-9

lrwxrwxrwx 1 root root 8 8月 6 11:15 /dev/mapper/asmdata1p1 -> ../dm-20

lrwxrwxrwx 1 root root 7 8月 6 11:15 /dev/mapper/asmdata2 -> ../dm-8

lrwxrwxrwx 1 root root 8 8月 6 11:15 /dev/mapper/asmdata2p1 -> ../dm-19

lrwxrwxrwx 1 root root 7 8月 6 11:15 /dev/mapper/asmdata3 -> ../dm-7

lrwxrwxrwx 1 root root 8 8月 6 11:15 /dev/mapper/asmdata3p1 -> ../dm-18

lrwxrwxrwx 1 root root 7 8月 6 11:15 /dev/mapper/asmdata4 -> ../dm-5

lrwxrwxrwx 1 root root 8 8月 6 11:15 /dev/mapper/asmdata4p1 -> ../dm-16

lrwxrwxrwx 1 root root 8 8月 6 11:15 /dev/mapper/asmdata5 -> ../dm-13

lrwxrwxrwx 1 root root 8 8月 6 11:15 /dev/mapper/asmdata5p1 -> ../dm-21

[root@ ~]# ls -l /dev/dm-13 /dev/dm-21

brw-rw---- 1 grid dba 253, 13 8月 6 11:15 /dev/dm-13 << 确认属性为grid dba

brw-rw---- 1 grid dba 253, 21 8月 6 11:16 /dev/dm-21 << 确认属性为grid dba

[root@ ~]#

##############################################################################################

另一个物理节点(如果为RAC的系统，另一个节点的操作说明)：

注意：另一个节点不需要再执行磁盘分区命令

(1)修改alias的新增磁盘的名字

[root@ ~]# vi /etc/multipath.conf

multipath {

wwid 360002ac000000000000002ea000066e3

alias asmdata5

}

multipath {

wwid 360002ac*************************

alias asmdata6 <<< 设置新增的磁盘的名字为asmdata6

}

(2)重新加载mulitipathd，并查看相关的磁盘信息

[root@ ~]# service multipathd reload

[root@ ~]# multipath -ll |grep -A6 asm

asmdata6 (360002ac*************************) dm-13 3PARdata,VV <<< 找到对应的asmdata6这块磁盘

... snip ...

(3)核准参数文件12-dm-permissions.rules配置

(4)确认新增磁盘属性